Union Pacific SD70ACe No. 4141 sits in the main shop building for minor work at UP’s Jenks Shop at North Little Rock, Arkansas, on May 19, 2015. The day before, the locomotive was given a fresh co... (more)

Three EMD locomotives in different stages of overhaul sit outside on the huge Downing B. Jenks Locomotive Shop at North Little Rock, Arkansas, on the afternoon of May 19, 2015. GP38-2 No. 689 and ... (more)

UPY No. 610 sits in the sandblasting bay at the paint shop at Union Pacific’s Jenks Shop in North Little Rock, Arkansas, on May 19, 2015. After all the desired paint and lettering is removed in th... (more)

A welder puts some elbow grease into it as he grinds fresh welds on repairs to the nose of Union Pacific SD40-2 No. 3071 at the Downing B. Jenks Shop in North Little Rock, Arkansas, on May 19, 201... (more)

Missouri Pacific owned over 300 SD40-2s, but the locomotive that really defined the MP in the 1970s and beyond was the EMD GP38-2 - The MoPac owned 264 GP38-2s (along with 6 GP38s). Built in Augu... (more)

A trio of Missouri Pacific SD40-2s (3205, 3215 and 3190) maneuver through the yard in North Little Rock, Arkansas, on June 2nd, 1983. Meanwhile, a coal train led by Burlington Northern C30-7 5006... (more)

Looking like a model railroader's kitbashing project, Rock Island GP40 4710 sits in the deadline in North Little Rock, Arkansas, in May 1985. The deadline is made up of former Rock Island and Wes... (more)

Two EMD SD70Ms wait for work at Union Pacific’s Downing B. Jenks Shop in North Little Rock, Arkansas, on May 19, 2015. No. 5090 has the “standard” SD70M cab, while sister No. 5155 is equipped with... (more)